While Trump’s bluster and temperament seem ill-suited to the subtleties of diplomacy he is surely not the cause of our current predicament.

On December 18, President Trump unveiled his first National Security Strategy (NSS) report. Here is what you should know about this important national security document.

As the number of missile-wielding states grows and as the nuclear club expands, the likelihood of a missile being unleashed against the American people or their allies—whether by mistake, miscalculation, or a madman—also grows. Missile defense doesn’t eliminate the danger, but it does give us a fighting chance to confront it.

In light of its actions in 2016, there should be no question as to whether Vladimir Putin’s Russia is or can be a friend.

Is the liberal democratic order that has provided stability, prosperity, and freedom across the globe for the better part of 70 years in peril? Is America witnessing a slow fade of its core values, or is the country at a tipping point that will lead to a renewal of the spirit of liberty?

St. Thomas Aquinas knew more than his modern emendators do about grounding his just war deliberations—and much else—in the cardinal moral virtue of prudence.

One of the hardest things for the American people to understand about the war unleashed on September 11 is that, 16 years in, we may be closer to its beginning than its conclusion.

Determining when and where to serve “the interest of humanity” is not a science. In a broken world, American policymakers must seek the counsel of the heart and the head, aim for the achievable, and choose the least-bad option.

Every president faces a devil’s choice between stability and security on the one hand and our founding values on the other.